Fix pure dijet scenario chains
Fixes:
- Dijet scenario now does not apply a dphi cut by default (recovering the Run 2 functionality of invm)
- If no j1eta/j2eta values are provided default ones are used (so now j1eta/j2eta can be missing in the scenario)
Extension:
- It is possible now to apply a dphi cut if provided (djdphi) [ATR-22605]
Two test dijet chains were added to LS2_v1 menu
Edited by Jonathan Bossio